diff --git a/src/main/java/me/lensfrex/manager/Main.java b/src/main/java/me/lensfrex/manager/Main.java
index 1e5be0c..cdcf0f1 100644
--- a/src/main/java/me/lensfrex/manager/Main.java
+++ b/src/main/java/me/lensfrex/manager/Main.java
@@ -1,10 +1,6 @@
 package me.lensfrex.manager;
 
 import me.lensfrex.manager.utils.Console;
-import me.lensfrex.manager.utils.Worker;
-
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
 
 public class Main {
 
@@ -19,7 +15,7 @@ public class Main {
     private void run() {
         while (parseCommand(consoleTool.getUserInput()) != -1) {
             System.out.println(
-                    "****************************************************************\n" +
+                    "----------------------------------------------------------------\n" +
                             "    Please enter your choice:"
             );
         }
@@ -41,8 +37,16 @@ public class Main {
                 }
                 break;
             case "2":
+                System.out.println("Please enter the id or name of the student:");
                 String userInput = consoleTool.getUserInput();
-                //System.out.println("Are you sure to delete" + userInput + "? (yes/no)");
+
+                System.out.println("Are you sure to delete \"" + userInput + "\"? (enter yes/no)");
+                String sure = consoleTool.getUserInput();
+
+                if (!sure.equals("yes")) {
+                    break;
+                }
+
                 try {
                     long id = Long.parseLong(userInput);
                     worker.removeStudent(id);
@@ -67,6 +71,7 @@ public class Main {
                 break;
             case "8":
             case "9":
+                System.out.println("Please enter the id or name of the student: ");
                 String input = consoleTool.getUserInput();
                 try {
                     long id = Long.parseLong(input);
@@ -86,7 +91,7 @@ public class Main {
                 worker.printHelp();
                 break;
             default:
-                System.out.println("Don't recognize... Please enter again. (Enter 12 to show help again)");
+                System.out.println("- Don't recognize... Please enter again. (Enter 12 to show help again)");
                 break;
         }
         return 0;
diff --git a/src/main/java/me/lensfrex/manager/utils/Worker.java b/src/main/java/me/lensfrex/manager/Worker.java
similarity index 87%
rename from src/main/java/me/lensfrex/manager/utils/Worker.java
rename to src/main/java/me/lensfrex/manager/Worker.java
index 35b17b6..aa4687d 100644
--- a/src/main/java/me/lensfrex/manager/utils/Worker.java
+++ b/src/main/java/me/lensfrex/manager/Worker.java
@@ -1,8 +1,9 @@
-package me.lensfrex.manager.utils;
+package me.lensfrex.manager;
 
 import me.lensfrex.manager.Main;
 import me.lensfrex.manager.data.Student;
 import me.lensfrex.manager.data.manager.StudentManager;
+import me.lensfrex.manager.utils.IOUtil;
 
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -36,6 +37,8 @@ public class Worker {
     public void addStudent(String userInput) {
         studentManager.addStudent(userInput);
         System.out.println("[System]: Done. (Maybe?)");
+        System.out.println("Any others? (enter \":wq\" to finish.)");
+
     }
 
     /**
@@ -62,6 +65,8 @@ public class Worker {
      * 输出每门课程的总成绩及平均分
      */
     public void printAllSubjectInfo() {
+        System.out.println("----------------------------------------------------------------");
+        System.out.println("All subject score:");
         ArrayList<String> table = studentManager.generateAllSubjectInfo();
         for (String record : table) {
             System.out.println(record);
@@ -81,7 +86,8 @@ public class Worker {
     public void printAllStudentScoreInfo() {
         ArrayList<Student> students = studentManager.getStudents();
 
-        System.out.println("- All student general score:");
+        System.out.println("----------------------------------------------------------------");
+        System.out.println("Information of all subjects:");
         StringBuilder stringBuilder = new StringBuilder();
         for (Student student : students) {
             stringBuilder
@@ -124,9 +130,9 @@ public class Worker {
      * 按姓名的字典顺序排出成绩表
      */
     public void printScoreTableByName() {
-        System.out.println("---------------------------------------------------------------------");
+        System.out.println("-----------------------------------------------------------------------");
         System.out.println("ID  |  Name  |  General Score  |  Subject1: score Subject2: score ...");
-        System.out.println("---------------------------------------------------------------------");
+        System.out.println("-----------------------------------------------------------------------");
 
         ArrayList<String> table = studentManager.generateScoreTableByName();
         for (String record : table) {
diff --git a/src/main/java/me/lensfrex/manager/data/manager/StudentManager.java b/src/main/java/me/lensfrex/manager/data/manager/StudentManager.java
index c18153a..7b07187 100644
--- a/src/main/java/me/lensfrex/manager/data/manager/StudentManager.java
+++ b/src/main/java/me/lensfrex/manager/data/manager/StudentManager.java
@@ -271,7 +271,7 @@ public class StudentManager {
                 .append("      All Student Information       \n")
                 .append("------------------------------------\n");
 
-        ArrayList<String> studentTable = this.generateScoreTableByName();
+        ArrayList<String> studentTable = this.generateScoreTableById();
         for (String record : studentTable) {
             stringBuilder.append(record).append('\n');
         }
diff --git a/src/main/resources/me.lensfrex.manager/helpMessage.txt b/src/main/resources/me.lensfrex.manager/helpMessage.txt
index 055ce30..c7e62d8 100644
--- a/src/main/resources/me.lensfrex.manager/helpMessage.txt
+++ b/src/main/resources/me.lensfrex.manager/helpMessage.txt
@@ -1,6 +1,6 @@
-****************************************************************
+----------------------------------------------------------------
                  Welcome to StudentManager-S
-****************************************************************
+----------------------------------------------------------------
 Do you want to:
     1. Input record
     2. Remove a student (by name or id)
@@ -15,5 +15,5 @@ Do you want to:
     11. List record
     12. Show help again
     0. Exit
-****************************************************************
-    Please enter your choice:
\ No newline at end of file
+----------------------------------------------------------------
+    Please enter your choice: